CN101974679A - Method for arsenic removal and phosphorous removal out of iron ore - Google Patents
Method for arsenic removal and phosphorous removal out of iron ore Download PDFInfo
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Abstract
A method for arsenic removal and phosphorous removal out of an iron ore comprises the steps of: crushing and grinding the ore, performing preliminary calcination, filtering by means of inorganic reagent solutions to obtain arsenic and phosphor and separating the solid phase from the liquid phase. The invention is characterized in that the crushed ground iron ore are mixed with carbon reducing agents and carbonate mud. The mixture is performed preliminary calcination in an oxygen-containing environment. The obtained product is cooled in a water or alkaline aqueous solution. And the magnetic mineral processing is performed in an inorganic reagent aqueous solution.
Description
Technical field
The present invention relates to field of metallurgy and metallurgy and field of mining, more particularly, relate to iron ore, iron ore concentrate stone, titanomagnetite stone, ferrimanganic ore, siderochrome ore, manganese ore and other ore and metallurgical mud, physical chemistry before its metallurgy and hydrometallurgy is handled, to remove undesired impurity, at first, arsenic, phosphorus and zinc and lead, and from these ores, concentrate and mud, emanate out valuable vanadium, chromium, nickel, bromine and other materials.
Background technology
But the ore that uses of molten blast furnace for example in industry, obtain the concentrate that conformance with standard requires through enrichment, this standard-required about iron level (between weight percentage 48% to 62%, depend on ore type), and arsenic content (weight percentage＜0.05%), phosphorus (weight percentage＜0.25), referring to [Ye.F.Vegman (ed.), Blast-FurnaceProduction, Reference-book, Vol.1, Ore Preparation and Blast-furnace Process, Moscow, Metallurgy, 1989, p.496].
There has been different technology to be used to the enrichment of various ores and the removal of impurity, to be used for metallurgical refining.Substandard ore is generally sedimentation type, and store content in the world is near 20%, and is increasing always, and these substandard ores are very attractive in the ore of these types.Therefore, handling these ores becomes a practical challenges, even because such processing is very complicated, also need extra cost, this cost that is related to metallurgical raw material increases and shortcoming.
In addition, can use some technology, wherein rare and valuable composition for example alloying constituent, zinc, lead, bromine, silver, gold, rhodium and other is extracted out simultaneously.
Meanwhile, to various countries (not only for Ukraine, also for Russia, Japan, the U.S., China, Germany, Brazil, France, Italy, Britain, India, Czech, Canada, Romania, Korea S, Poland, Australia, Holland, Slovakia and other countries) useful chemical technology is employed, be not only in rare metal and Non-ferrous Metallurgy, and in ferrous metallurgy.
Have been found that in the chemical treatment of ore, phosphorus, arsenic and vanadium can be removed together; This is to learn from the analysis in iron ore, silicate mine and other ore deposits.In addition, rare and valuable composition also can be removed and enrichment, referring to [V.F.Gillebrandet al., Practical Guide in Inorganic Analysis, Moscow, Chemistry, 1966, p.1111].
This fact makes and adopts chemically treated interest to increase, and removes in iron ore, manganese ore and other ores undesired impurity for example arsenic, phosphorus, zinc, lead, silicate and other materials with chemical treatment.
Processing contains the iron, 0.1%～0.4% arsenic of weight percentage 30%～48%, the ore of 0.5%～1.0% phosphorus.This ore contains rock and coherent mass, wherein contain hydrogoethite, pyrrhosiderite, magnetite, ferrimontmorillonite, phosphoric acid salt (phosphatic rock, vivianite and other), contain arsenic minerals stone (ruby arsenic, orpiment, arsenopyrite, scorodite and other), silicate (feldspar, quartz, and other), these engage with mixture well, the smallest particles size is at about 0.05 μ m to 2 μ m, and maximum particle size is to about 0.05mm.Mechanical means can not be removed this mixture to the level that allows, and therefore adopts the hydrometallurgical technology of removing arsenic and phosphorus.
The removal method of arsenic and phosphorus in a kind of iron ore known in the state of the art, wherein ore pulverizes and is milled to particle size 0.05mm～0.5mm, and by 0.5% to 2% sulfuric acid at high liquid phase and solid phase ratio (L: S) handled about 10～25 hours, by ion-exchange techniques impurity is extracted from solution then, referring to [French Patent No.1.505.100, Cl.C22B 3/06, published in 1963].
The shortcoming of this existing method comprises secular processing, and a large amount of liquid phases, and this needs a large amount of treatment facilities.
The same known a kind of method of removing p and s from iron ore of prior art by iron ore is mixed with 6%～7% soda, is heated to 300 ℃, and use the hot water washed mixture, referring to [US Patent Series No.3.928.024, Cl.C22B1/11, published in 1975].
The removal that the shortcoming of this existing method comprises phosphorus in the ore, arsenic and other impurity is effectively (reaching 10% to 30%) not.
Remove the method for arsenic in the also known a kind of arsenopyrite of prior art, this method comprises by grinding 5～30 minutes with acceleration 40g～50g in planetary ball mill, basic solution by 2% in solid phase and liquid phase than S: L=1: leached arsenic about 48 hours 10 times, referring to [T.S.Syrtlanova et al.Proceedings of the Siberian Division of the Academyof Sciences of the USSR, Chemical Science Series, 1979, edn.3, No.7, pp.50-5].
In this existing method, leach the degree height of arsenic, but this method can only be used for pyrite; Secular this method need consume a large amount of alkali (ore weight 20%), and the material after the filtration contains 0.22～1.5% the arsenic of having an appointment.
These methods have been utilized reduction process temperature and low acid base concentration, therefore, efficient is low, and adopts stricter environment, in pressure kettle under 125 ℃～140 ℃ with 40% to 50% alkali or under 95 ℃～100 ℃ the sulfuric acid with 60%～70% carry out chemistry or thermal treatment, referring to [The 8
ThInternational Congress for the Beneficiation of Minerals, Vol.2, Leningrad, Mechanobr Publishers, 1969].
In art methods, a large amount of consumption reagent will cause not meeting cost benefit, and chemical hazard.
A kind of method of from ore, removing phosphorus known in the state of the art, by 800 ℃～1000 ℃ oxidizing roastings of temperature 1 hour, by in solid phase and liquid phase than S: L=1: 1-1: 2 and 20 ℃～50 ℃ of temperature under 49% sulfuric acid carried out leaching 2～3 hours, referring to [Russian Patent No.2 184 158, Cl.C22B1/11, published on 27.06.2002].
The shortcoming that should have method now is the high loss that comprises iron, and this loss accounts for 4%～8%, and high chemically active solution causes the corrosion of equipment.
With the similar methods of the present invention is a kind ofly to remove the method for arsenic and phosphorus from iron ore, and this method comprises that ore pulverizes and grinds; One-step baking is 1～1.5 hour at the beginning of 500 ℃～600 ℃ times; Utilize sulfuric acid (with respect to phosphorus stoichiometrical 100%～150%) at 60 ℃～80 ℃ of temperature, S: L=1: 3-1: 5 times, iron ore leaching after roasting goes out arsenic and phosphorus, the leaching time length is 2～3 hours, referring to [R.D.Dukino, V.M.England.Phosphorous in Iron Ores of theHamersley Range, the Australian Institute of Mining and Metallurgy (AusIMM) 1997, No.5, PP.197-202].
The shortcoming that should have method now is the low extraction that comprises arsenic (reaching 30%) and phosphorus (reaching 60%), and the iron ore of low iron content is concentrated; Can not from iron ore, extract zinc and lead, and useful and rare composition; A large amount of consumption bronsted lowry acids and bases bronsted lowries.
Summary of the invention
Therefore, the problem to be solved in the present invention is, improves the method for removing arsenic and phosphorus from iron ore, and the ore after wherein will pulverizing and grind mixes with carbonaceous reducing agent and carbonate sludge; In oxygenated environment, mixture carried out one-step baking just; The product water and the aqueous solution that obtain are cooled off; Under the aqueous solution of inorganic reagent, carry out magnetic concentration, guarantee suitable arsenic content and the phosphorus content of iron ore product enrichment, thereby guarantee the suitable increase of iron level, and the arsenic of low levels and phosphorus, can extract in addition deleterious zinc of metallurgical technology and lead, and useful and rare composition, reduce the consumption of bronsted lowry acids and bases bronsted lowry.
Above-mentioned purpose realizes by a kind of method of removing arsenic and phosphorus from iron ore, and this method comprises that ore pulverizes and grinds; It is one-step baking just; Utilize inorganic reagent solution that arsenic and the phosphorus iron ore after the roasting is leached; With solid phase and liquid phase separation, its characteristics are:
-iron ore after will pulverizing and grind mixes with carbonaceous reducing agent and carbonic acid salt slurry;
-first the mixture that obtained of one-step baking in oxygenated environment;
The aqueous solution of-water or alkali is with the product cooling that is obtained;
-in the aqueous solution of inorganic reagent, carry out magnetic concentration.
In addition, the roasting of mixture is (8-12) than carbonic acid salt slurry than the ratio of ore at carbonaceous reducing agent preferably: (1.5-2.5): 100; Carbonaceous reducing agent comprises mud coal, coal or coke; The carbonate mud drum is drawn together the aqueous solution that filters lime and soda; In mixing step, add sodium-chlor or seawater; Calculate with sodium hydroxide, utilize 8% to 12% carbonic acid salt slurry filtrate solution, carry out the leaching step, wherein initial temperature does not further heat at 90 ℃ to 105 ℃; Utilize mol ratio 0.95: the lime (1-1.1) and the solution of soda are finished mixing step and leaching step; Utilize seawater to prepare sodium hydroxide solution; Utilize seawater to prepare lime and soda solution.
Description of drawings
Below in conjunction with accompanying drawing essence of the present invention is further described.
Fig. 1 is the schema of iron ore dressing and iron ore concentrate ore dressing, utilizes alkali extraction arsenic and phosphorus, and the part extracting vanadium.
Embodiment
The method according to this invention will be implemented as follows:
Pulverize and grind iron ore, and mix with carbonaceous reducing agent and carbonic acid salt slurry.Carbonaceous reducing agent comprises mud coal, coal or coke, mixes with carbonic acid salt slurry and iron ore, and ratio is (8-12): (1.5-2.5): 100; Carbonate mud is included in the mud that obtains behind the aqueous solution that filters soda and lime.In the step of the mixture after cooling and compound iron ore, reductive agent and the roasting of carbonic acid salt slurry, be added in water or the seawater: (1-1.1) solution or the alkaline solution that are obtained of combined lime suspension and soda solution with mol ratio 0.95.The purity of this ratio by commerical prod accounts for 95% usually and determines that this is for the soda particularly important, because its shortcoming will cause Ca (OH)
2Incomplete decomposition, thus the leaching process weakened.Under the situation of using lime and soda, obtain alkaline solution by following reaction:
Ca(OH)
2+Na
2CO
3＝CaCO
3+2NaOH
After the filtration, thin CaCO
3With Na
2CO
3Be introduced in the furnace charge with the mixture of NaOH, this makes wherein to form and is dissolved in the sodium in the alkaline solution, the phosphoric acid salt of potassium and the mixture of arsenate.
In the method according to this invention, soda be utilized as 100%.
(preferred amount (is preferably measured the preliminary oxidizing roasting for the mixture of the 0.5wt% of ore～2wt%) for the 8wt% of ore～12wt%), sodium-chlor for iron ore, carbonaceous reducing agent, in flue gas atmosphere, carry out, temperature is at 805 ℃～900 ℃, about 1 hour to 1.5 hours.In the alkaline solution with hot water emission to 8%～12%, thus suspension temperature near boiling point, solid phase and liquid phase ratio are S: L=1: 1-1: 1.2.
The scope of reductive agent content (calculating with carbon) is 8wt%～12wt%, if its content is less than 8wt%, reduction is incomplete so, if greater than 12wt%, economic benefit reduces so.
Following reaction takes place in the reduction in the flue gas oxidizing atmosphere in roasting and the iron ore stone:
As
2S
3+C+5O
2→As
2O
3+3SO
23+CO (1)
6FeAsS+C+15O
2→Fe
3O
4+As
2S
3+6SO
2+CO (2)
6FeAsO
4+C+9O
2→2Fe
3O
4+3As
2O
3+CO (3)
The As that forms
2O
3Distillation ore removal stone structure is to the surface of ferric oxide, and absorbs with chemical process.In following alkaline purification process, the arsenic that exists with the Sodium metaarsenite form enters solution.
Roasting is carried out in oxidizing atmosphere, and similar chemical reaction (1) takes place, the reaction of (2), but do not have carbon to participate in, it is impossible that reaction (3) simultaneously becomes.Because scorodite (FeAsO
42H
2O) solvability low (between 8wt%～12wt%) in weak base, the leaching of scorodite is incomplete, and most arsenic does not enter solution.
After the roasting, ore enters in the alkaline solution, therefrom finishes the magnetic concentration of ore.Utilize the heat of hot furnace charge to add hot alkaline solution to the temperature near the solution boiling point, and magnetic concentration leaching the time, this needing have been avoided furnace charge to repeat heating: at first, and for magnetic concentration and subsequently for the heating of leaching.In addition, have been found that the obstruction of the furnace charge after the roasting in alkaline solution has reduced arsenic and the phosphorus output to the aqueous solution during preliminary magnetic concentration.
By the furnace charge after the roasting is entered alkaline solution, perhaps by after smelting furnace is discharged, applying water, raw material after the roasting is quenched, reduce to the boiling point of solution, make the sodium potassium that when high temperature, forms and sodium iron phosphoric acid salt and metaphosphate mixture keep water-soluble from maturing temperature.Similarly, with the water contact process in quench and to have influenced the solvability of arsenic and phosphorus compound, and cause breaking and disintegrating of cluster of grains, and in its structure, form the built-in system in big transportation hole, below having promoted, this utilize the arsenic of alkaline solution or acid solution to remove and phosphorus removal technology.
In the wet magnetic separation ore deposit, the leaching time length is 1 to 3 hour, and outlet temperature is between 20 ℃ to 50 ℃.Utilize the magnetic product and the residue of water filtration and washing ore dressing, the amount of water is the alkali between the porous air that enough washes away precipitation (magnetic and non magnetic).After alkaline purification, filtrate and washings mix and cause the electroless plating stage of the salt of arsenic, phosphorus, vanadium and other elements, depend on the output synthetics of ore.The input filtrate is with the new part in the ore after the leaching roasting.
From the isolated precipitation of filtrate, utilize adapted water or seawater to wash.The input washing water, the ore after the roasting of the heat of discharging in the stove with cooling, the steam of Xing Chenging condensation in heat exchanger simultaneously; Phlegma is supplied to sedimentary final washing, and washing pH value is between 7.5 to 8.0.Nonmagnetic precipitation (residue) enters storage bay or handles, and for example becomes building material or phosphate fertilizer.
After magnetic concentration, utilize 1%～2% sulfuric acid or nitric acid filtering-depositing to be washed with low filtration velocity, the time length that precipitation contacts with acid solution is 15 minutes to 30 minutes, the pH value of filtrate is between 6.5 to 7.Utilize water that precipitation is washed, the amount of water equals the amount of bonded water between sedimentary porous air.After acid treatment, filtrate and washings mix and remove the salt (depending on ore chemistry) of arsenic, phosphorus, vanadium, chromium, nickel, bromine and other elements.
If desired, magnetic concentrate also is supplied to forge hearth, wherein remains in nearly 40% arsenic in the concentrate and 30% phosphorus and is removed.
It is vivianite (FePO that the phosphorus that contains in the ore is generally form
4Phosphatic rock, phosphatic rock (Ca
3(PO
4)
2), and as data are said recently, wavellite (AlFe (PO
4)
2).At SiO
2Under the situation about existing, the complete cracked of this ore occurs in 1500 ℃, forms phosphorous vapor and slag (Calucium Silicate powder), but P
2O
5As far back as 185 ℃ of evaporations, and when higher temperature (＞800 ℃), phosphatic structure is tended to " swing ", and this promotes the reaction of NaCl and carbon, for example:
FePO
4+C+NaCl+H
2O→FeNaPO
3+HCl+CO
24 (4)
FeAsO
4+C+NaCl+H
2O→FeNaAsO
3+HCl+CO
2 (5)
Passing through after hydration process the ferrous water-soluble form that is converted into of the metaphosphoric acid that in alkaline solution, forms; In the latter's hydrolytic process, phosphoric acid combines with alkali, and enters in the solution of sodium-metaphosphate form.
In furnace charge, need there be minor N aCl, as the catalyzer (mineralizer) of process (4) and (5), and preferably add with seawater, if particularly ore is piled up by the sea, the Kerch of Ukraine (Kerch Basin) iron ore for example.But NaCl content increases greater than 2%, will cause furnace charge caking when surpassing 800 ℃, and this complicates the leaching process.
To describe the example of implementing method of the present invention below in detail, two kinds of iron ores that are used to from the Kerch (Kiz-Aul Deposit of the KerchBasin) are in alkaline environment, then in sour environment and wrought iron kiln roasting-magnetic ore dressing and processing:
-filemot, be the clay lean ore No.1 of tobacco color, contain (weight percentage) CaO=1.9; SiO
2=41.4; Al
2O
3=8.8; Mn=0.4; Fe=29.8; As=0.09; P=1.05; And V=0.01;
-brown iron and manganese ore No.2, contain (weight percentage):
CaO＝2.5；SiO
2＝7.1；Al
2O
3＝4.1；Mn＝12.3；Fe＝39.1；As＝0.33；P＝0.58；B＝0.001。
Because the nano particle of silicate ore and ferric oxide mutually combines, these ores may not carry out ore dressing with gravity methods, therefore in these experiments, do not adopt the gravity methods ore dressing.
Example 1
With 200cm
3The aqueous solution of Su Da (25.5g) and 18.5g contain 95wt%Ca (OH)
2Lime mix mol ratio Ca (OH)
2: Na
2CO
3Be 0.95: 1, make 10% alkaline solution.With solution (200cm
3) from the throw out (CaCO of 25g
3The Na of+1g
2CO
3The NaOH of+0.8g) separate, throw out joins the ore No.2 of 200g, also adds the NaCl (1wt%) of 2g and the coke of 16g (8wt%).After coal combustion, the furnace charge that will be obtained in fire clay crucible is placed in the retort furnace, and under oxygen gas atmosphere.With retort furnace heating 30 minutes,, and kept 1 hour from 600 ℃ to 805 ℃.Pour the furnace charge after 500 ℃ the roasting into 200cm
310% alkaline solution, until its boiling.The suspension of heat of stirring 3 hours (in 3 hours, suspension temperature is 25 ℃).Magnetic particle (77%) is separated from non-magnetic particle (23%).After washing magnetic suspension liquid and non magnetic suspension, obtain 200cm
3Alkaline solution, this alkaline solution contains the salt of arsenic, phosphorus and vanadium.After utilizing lime precipitation, from solution, isolate throw out (2.2g), this throw out contains (weight percentage): Ca=20.6; V=0.62; Mn=5.6; Fe=2.0; Ni=0.03; Cu=0.02; Ge=0.005; As=8.1; Br=0.65; Sr=9.3; Ag=0.075, P=10.2.
Utilize 200cm
31%H
2SO
4On strainer, clean magnetic part (154g).Obtained filtrate utilize lime to handle, obtain the throw out of 9.6g, this throw out contains (weight percentage): Ca=5.6; V=0.32; Cr=0.26; Mn=21.8; Fe=0.2; Zn=0.12; As=17.4; Br=0.95; Sr=3.3; P=21.3.
Concentrate after the washing of acquisition 151g, this concentrate contains (weight percentage): Ca=0.59; Ti=0.31; V=0.0005; Mn=15.5; Fe=51.1; As=0.015; Sr=0.45; Y=0.06; P=0.20.The coke that in concentrate, adds 15wt%, and mixture is heated to 1300 ℃ in reducing environment.At magnetic part and nonmagnetic portion after separating, obtain the efflorescence thing, this efflorescence thing contains Fe=79.6wt%; As=0.004wt%; P=0.12wt%; V=0.001wt%, ultimate production is 81wt%.
Implement other examples of from iron ore, removing the method for arsenic and phosphorus of the present invention, as shown in table 1, shown the mixture of roasting in oxygenated environment and the composition of carbonaceous reducing agent in the table, in table 2, the ore after the roasting and the output of chemicals thereof have been shown after magnetic concentration and the iron-smelting process.In addition, these forms contain example (No.0), remove the method for arsenic and phosphorus as the enforcement of prototype.
Table 1
Table 2
Wherein, 11
*Be metallurgical mud, this metallurgy mud contains (weight percentage): Fe=44.3; SiO
2=5.7; MgO=3.7; CaO=8.9; MnO=0.55; C=8.8; As=0.081; P=0.27; Zn=0.41; Pb=0.11.
Analysis based on the result of last table can draw following conclusion:
Optimum maturing temperature is between 805 ℃ to 900 ℃; Alkaline concentration (calculating with NaOH) is between 8% to 12%; Acid concentration reaches 2%.Temperature is higher than 900 ℃ and causes producing the heat exhaustions of no direct relation, and acid concentration is higher than 2%, and alkali concn is higher than 12%, and excessive reagent use can not produce any improvement to processing parameter.In addition, be higher than at 2% o'clock in acid concentration, the iron leaching will increase; Same reason, minimum S: the L ratio is 1: 1.2, because under liquid-consumed higher situation, reagent consumption also increases.
From example 11
*As seen, the method according to this invention can be handled metallurgical mud (ore dressing residue) effectively, extracts all arsenic and phosphorus from metallurgical mud (in order to obtain vendible product) as far as possible, and zinc and lead; In addition, can after extract by existing chemical process useful mixture (Cr, Ni, Cu, V, Ag, and other), also can be extracted in the solution.
Method of the present invention is compared with prototype, in all cases, except example 8 low alkaline concentrations (5%) and example 9 low maturing temperatures (615 ℃), can reach better result: the phosphorus extraction is extracted as with arsenic and is higher than about 50% to 70% of reagent consumption identical in prototype.
Though the type of service of alkali is 8% to 12% solution, the consumption of alkali also seldom because remove arsenic, phosphorus, vanadium, zinc, lead and other from employed alkaline solution after, alkaline solution is got back to leaching technology, the loss thereby alkali just is in the suds; But,, enter technology once more from the alkali of washings because this washing cools off by the furnace charge of " quenching " method after to roasting.The loss of the verified each round-robin alkali of our research can not surpass 0.3% to 0.5%.In addition, the cost of alkali obviously (1.5 times) reduces, because utilized the mixture of lime and Su Da; Enter the furnace charge of roasting from its interactional mud.
Mixed weak acids and weak caustic solution, this provides the extraction of other rare metal, Ag for example,, Rh and other, simultaneously in and draining.
Therefore, the method from iron ore removal arsenic and phosphorus according to the present invention is compared with immediate prototype, has following advantage:
1. the product of Huo Deing contains the iron of 60wt% to 80wt%, and has the arsenic (0.015wt%) and the phosphorus (between the 0.20wt% to 0.25wt%) of low levels, and can extract deleterious zinc of metallurgical technology and lead, and useful and valuable composition V for example, Ni, Cr, Zr, Cu, Ag and other);
2. energy requirement does not surpass magnetic concentration technology, because in the leaching step, uses the heat of magnetizing roasting;
3. the consumption of bronsted lowry acids and bases bronsted lowry is little, and proof possesses skills and economic benefit: calculating shows that in optimum reagent consumption, extract vanadate, phosphoric acid salt and arsenate to solid product from alkali, the benefit of generation reaches PMT (Per metric ton) (MT) ore U.S. dollar.
At present, method of the present invention is in bench testing (Bench Test), and purpose is the commercial dresser of a design factory, is used for the lean ore of one of iron ore of the Ukraine of annual 600 ten thousand tonnes of turnout.
Claims (9)
1. remove the method for arsenic and phosphorus from iron ore, this method comprises pulverizing of ore and grinds, first one-step baking; Utilize inorganic reagent solution leaching arsenic and phosphorus; With solid phase and liquid phase separation; It is characterized in that: described pulverize and grind after iron ore mix with carbonaceous reducing agent and carbonic acid salt slurry; Described mixture is first one-step baking in oxygenated environment; The product that is obtained cools off by the aqueous solution of water or alkali, and carries out magnetic concentration in the aqueous solution of inorganic reagent.
2. method according to claim 1 is characterized in that: described mixture is (8-12) than carbonic acid salt slurry than the ratio of ore at carbonaceous reducing agent: (1.5-2.5): 100 times roastings.
3. method according to claim 1 and 2 is characterized in that: described carbonaceous reducing agent comprises mud coal, coal or coke.
4. method according to claim 1 and 2 is characterized in that: described carbonate mud is included in the mud that obtains after the aqueous solution that filters lime and Su Da mixture.
5. method according to claim 1 is characterized in that: also add sodium-chlor or salt solution in mixing step.
6. method according to claim 1 is characterized in that: calculate with sodium hydroxide, utilize 8% to 12% carbonic acid salt slurry filtrate solution, carry out the leaching step, wherein initial temperature does not further heat at 90 ℃ to 105 ℃.
7. method according to claim 1 is characterized in that: utilize mol ratio 0.95: the lime (1-1.1) and the solution of soda are finished described mixing step and leaching step.
8. method according to claim 6 is characterized in that: utilize seawater to prepare described sodium hydroxide solution.
9. method according to claim 4 is characterized in that: utilize seawater to prepare described lime and soda solution.
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| CN106676257A (en) * | 2016-12-23 | 2017-05-17 | 江西理工大学 | Arsenic removal method of arsenic-containing waste residues |
| CN108384945A (en) * | 2018-03-05 | 2018-08-10 | 北京矿冶科技集团有限公司 | A method of alkali containing fosfosiderite soaks dephosphorization |
| CN114561558A (en) * | 2022-02-23 | 2022-05-31 | 中南大学 | Method for recovering antimony and solid arsenic from arsenic-containing crystal |
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| WO2014009769A1 (en) | 2012-07-10 | 2014-01-16 | Arcelormittal Investigacion Y Desarrollo, S.L. | Method of processing an iron ore containing phosphorus, the iron ore having a gangue |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101033515A (en) * | 2007-04-16 | 2007-09-12 | 中南大学 | Process for preparing nickel ferroalloy by melting and reducing laterite nickel ore |
| CN101073790A (en) * | 2006-12-22 | 2007-11-21 | 昆明贵金属研究所 | Reduction-mill concentration treatment for different-type red-clay nickel mine |
| CN101215619A (en) * | 2008-01-03 | 2008-07-09 | 攀钢集团攀枝花钢铁研究院 | Method for extracting vanadium and removing phosphorus from vanadium-containing molten iron and steel-smelting technique using the same method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| RU2413012C1 (en) * | 2009-11-16 | 2011-02-27 | ЗАО "Донецксталь"-металлургический завод" | Procedure for purification of iron containing material from arsenic and phosphorus |
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2009
- 2009-06-03 RU RU2009120931/02A patent/RU2412259C1/en not_active IP Right Cessation
- 2009-12-22 CN CN2009102155773A patent/CN101974679A/en active Pending
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101073790A (en) * | 2006-12-22 | 2007-11-21 | 昆明贵金属研究所 | Reduction-mill concentration treatment for different-type red-clay nickel mine |
| CN101033515A (en) * | 2007-04-16 | 2007-09-12 | 中南大学 | Process for preparing nickel ferroalloy by melting and reducing laterite nickel ore |
| CN101215619A (en) * | 2008-01-03 | 2008-07-09 | 攀钢集团攀枝花钢铁研究院 | Method for extracting vanadium and removing phosphorus from vanadium-containing molten iron and steel-smelting technique using the same method |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103572059A (en) * | 2013-10-11 | 2014-02-12 | 张汝华 | Method for producing sponge iron and cement by using iron-containing materials through reduction and recovering valuable elements |
| CN106676257A (en) * | 2016-12-23 | 2017-05-17 | 江西理工大学 | Arsenic removal method of arsenic-containing waste residues |
| CN108384945A (en) * | 2018-03-05 | 2018-08-10 | 北京矿冶科技集团有限公司 | A method of alkali containing fosfosiderite soaks dephosphorization |
| CN114561558A (en) * | 2022-02-23 | 2022-05-31 | 中南大学 | Method for recovering antimony and solid arsenic from arsenic-containing crystal |
| CN114561558B (en) * | 2022-02-23 | 2023-08-29 | 中南大学 | Method for recycling antimony and fixing arsenic from arsenic-containing crystal |
Also Published As
| Publication number | Publication date |
|---|---|
| RU2009120931A (en) | 2010-12-10 |
| AU2009251075B2 (en) | 2013-05-02 |
| RU2412259C1 (en) | 2011-02-20 |
| UA87951C2 (en) | 2009-08-25 |
| AU2009251075A1 (en) | 2010-07-08 |
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Application publication date: 20110216 |